Shock Structures in Charge Variable Dusty Plasmas with Effect of Strongly Coupled Dust Particles

摘要

A theoretical investigation has been carried out to study the effect of strong electrostatic interaction on the dust acoustic shock structures in strongly coupled dusty plasma with dust charge fluctuations. The fluid approach is employed, in which the strong electrostatic interaction is modeled by effective electrostatic temperature. A Burger-like equation, the coefficients of which are significantly modified by effects of strong coupling and dust charge fluctuation, is derived. It is shown that the combined effects of dust charge fluctuation, the ion/electron temperature, the ion/electron population, and strong coupling effect modify the basic properties of the dust acoustic waves in such a strongly coupled dusty plasma. The results of this work are compared with those observed by some laboratory experiments.